18QHTF21-19.6875-PD

Oscillators Overview

The 18QHTF21-19.6875-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 19.6875 MHz with an output interface of LVCMOS. The device requires a supply voltage of 1.8V and features a Standby function for power down control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The unit supports an operating temperature range from -40°C to +85°C and maintains a frequency stability of ±50ppm.

Oscillators Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby mode for power management
• Compact surface-mount package design

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a low-voltage, small-footprint oscillator is required for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families without additional buffering. Consider the thermal operating range and stability specifications to ensure reliable performance under varying environmental conditions within the target application environment.

Oscillators Part Context

This part belongs to the 18QHTF series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and package sizes. The 'PD' suffix typically indicates the presence of a disable or standby pin functionality, allowing for active power control. This specific model provides a balance between size, power consumption, and standard digital output compatibility.

Oscillators Replacement Considerations

Direct substitutes must match the 19.6875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as current consumption and startup time. Cross-reference with other manufacturers offering similar SMD oscillators if availability is an issue.